Osprey Ozone Convertible 28"/75L Wheeled Luggage Easy access zippered top liquids pocket allows quick access to your toiletry kit or other small items With low profile handles on three sides of the Ozone it is easy to grab, pull and carry in any situation The convertible harness, hipbelt and suspension of the main luggage piece can be deployed to carry the Ozone Convertible where wheels can't go For quick escapes and adventures, the detachable daypack can be removed and filled with gear needs for the day High Road Chassis features a lightweight aluminum frame, large wheels with sealed bearings, and a high-clearance curved molded base